<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>修改商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 提示 -->
      <el-alert title="修改商品信息" type="info" center show-icon :closable="false"></el-alert>
      <!-- 步骤条 -->
      <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- Tab栏 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <!-- <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cascaderProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>-->
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的Item项 -->
            <el-form-item
              v-for="item in manyTableData

            "
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb, i) in item.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action: 图片上传的API接口地址 -->
            <div style="margin-bottom:10px; font-size:20px; font-weight:700">上传商品logo</div>
            <!-- <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headerObj"
              :on-success="handleSuccessLogo"
              list-type="picture"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>-->
            <el-upload
              class="avatar-uploader"
              :action="uploadURL"
              :show-file-list="false"
              list-type="picture-card"
              :on-preview="handlePreviewLogo"
              :on-remove="handleRemoveLogo"
              :on-change="handleEditChange"
              :on-success="handleSuccessLogo"
              :headers="headerObj"
            >
              <img
                v-if="addForm.goods_big_logo"
                :src="addForm.goods_big_logo"
                class="avatar"
                style="width:100%"
              />
              <i v-else class="el-icon-plus avatar-uploader-icon"></i>
            </el-upload>
            <!-- <el-upload
              class="avatar-uploader"
              :action="uploadURL"
              :limit="1"
              list-type="picture-card"
              :on-preview="handlePreviewLogo"
              :on-remove="handleRemoveLogo"
              :on-change="handleEditChange"
              :on-success="handleSuccessLogo"
              :headers="headerObj"
              :class="{hide:hideUploadEdit}"
            >
              <i class="el-icon-plus"></i>
            </el-upload>
            <el-dialog :visible.sync="dialogVisibleLogo">
              <img width="100%" :src="addForm.goods_big_logo" alt />
            </el-dialog>-->
            <div style="margin-top:20px; margin-bottom:10px; font-size:20px; font-weight:700">上传商品图片</div>
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headerObj"
              list-type="picture"
              :on-success="handleSuccessPic"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor
              v-model="addForm.goods_introduce"
              :options="editorOption"
              ref="myQuillEditor"
            ></quill-editor>
            <input
              type="file"
              accept=".png, .jpg, .jpeg"
              @change="change"
              id="upload"
              style="display: none"
            />
            <!-- 添加商品 -->
            <el-button type="primary" class="btnAdd" @click="addGoods">保存</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog title="图片预览" :visible.sync="previewDialogVisible" width="50%">
      <img :src="picPreviewPath" alt class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import { quillEditor, Quill } from "vue-quill-editor";
import { container, ImageExtend } from "quill-image-extend-module";
Quill.register("modules/ImageExtend", ImageExtend);
import _ from 'lodash'
export default {
  data() {
    return {
      // 步骤条默认激活 与左侧Tab联动
      activeIndex: '0',
      // 添加商品的表单对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品详情描述
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        // goods_cat: [
        //   { required: true, message: '请选择商品分类', trigger: 'blur' }
        // ]
      },
      // 商品列表
      cateList: [],
      // 级联选择器配置
      cascaderProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      // 动态参数列表数据
      manyTableData: [],
      // 静态属性列表数据
      onlyTableData: [],
      // 图片上传地址
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      // 图片上传组件的请求对象
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      picPreviewPath: '',
      // 图片预览对话框
      previewDialogVisible: false,
      dialogVisibleLogo: false,
      // 隐藏上传图片区域
      hideUploadEdit: false,
      editorOption: {
        //富文本配置项
        placeholder: "编辑文章内容",
        theme: "snow",
        modules: {
          ImageExtend: {
            loading: true,
            name: "pictureFile",
            size: 6,
            action: "http://127.0.0.1:8888/api/private/v1/upload",
            response: (res) => {
              return res.data.url;
            },
            headers: (xhr) => {
              xhr.setRequestHeader(
                "Authorization",
                window.sessionStorage.getItem("token")
              );
            },
            start: () => { },
            end: () => { },
            error: () => { },
            change: (xhr, formData) => { },
          },
          toolbar: {
            container: container,
            //拦截
            handlers: {
              image: function (value) {
                if (value) {
                  document.querySelector("#upload").click(); // 劫持原来的图片点击按钮事件
                }
              }
            },
          },
        },
      },
    }
  },
  created() {
    this.getCateList()
    this.getGoodInfo()
  },
  computed: {
    getCateId() {
      let arr = this.addForm.goods_cat.split(',')
      return Number(arr[2])
    }
  },
  methods: {
    async getGoodInfo() {
      console.log(this.$route.query.id);
      const id = Number.parseInt(this.$route.query.id)
      await this.$http.get(`goods/${id}`).then(res => {
        console.log(res.data.data);
        this.addForm = res.data.data
        this.addForm.attrs = []
        this.addForm.pics = []
      })
    },
    // 获取商品分类数据列表
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }
      this.cateList = res.data
    },
    // 级联选择器选中项变化时出发
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(activeName, odlActiveName) {
      // 未选中商品分类阻止Tab标签跳转
      // if (odlActiveName === '0' && this.addForm.goods_cat.length !== 3) {
      //   this.$message.error('请先选择商品分类')
      //   return false
      // }
    },
    // Tab标签被选中时触发
    async tabClicked() {
      if (this.activeIndex === '3') {
        this.dialogVisibleLogo = true
      }
      // 访问动态参数面板
      if (this.activeIndex === '1') {
        console.log(this.getCateId);
        console.log(this.addForm.goods_cat.split(','));

        const { data: res } = await this.$http.get(
          `categories/${this.getCateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.getCateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }
        this.onlyTableData = res.data
      }
    },
    // 处理图片预览
    handlePreviewLogo(file) {
      this.dialogVisibleLogo = true
    },
    handlePreview(file) {
      this.picPreviewPath = file.response.data.url
      this.previewDialogVisible = true
    },
    // 处理移除图片的操作
    handleRemove(file) {
      // 1.获取将要删除图片的临时路径
      const filePath = file.response.data.tmp_path
      // 2.从pics数组中，找到图片对应的索引值
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      // 3.调用splice方法，移除图片信息
      this.addForm.splice(i, 1)
    },
    handleRemoveLogo(file) {
      this.addForm.goods_big_logo = ''
      let vm = this
      vm.hideUploadEdit = false
    },
    // 处理上传图片数超过限制时隐藏上传区域
    handleEditChange(file, fileList) {
      let vm = this
      vm.hideUploadEdit = true
    },
    // 监听图片上传成功事件
    handleSuccessLogo(res) {
      this.addForm.goods_big_logo = res.data.url
      console.log(this.addForm.goods_big_logo);
    },
    handleSuccessPic(response) {
      // 1.拼接得到一个图片信息对象 临时路径
      const picInfo = { pic: response.data.tmp_path }
      // 2.将图片信息对象，push到pics数组中
      this.addForm.pics.push(picInfo)
    },
    // 添加商品
    addGoods() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写必要的表单项！')
        // 发送请求前：需对提交的表单进行处理goods_cat attrs
        // this.addForm.goods_cat = this.addForm.goods_cat.join(',')
        // 以上写法不对：级联选择器绑定的对象goods_cat要求是数组对象
        // 解决办法: 包：lodash 方法（深拷贝）：cloneDeep(boj)

        // 将this.addForm进行深拷贝
        const form = _.cloneDeep(this.addForm)
        // form.goods_cat = form.goods_cat.join(',')

        // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // 发起请求添加商品
        // 商品名称必须是唯一的
        console.log(form);
        const { data: res } = await this.$http.put(`goods/${form.goods_id}`, form)
        if (res.meta.status !== 200) return this.$message.error('修改商品失败！')
        this.$message.success('修改商品成功!')
        this.$router.push('/goods')
      })
    },
    change(e) {
      console.log(e.target.files[0]);
      let file = e.target.files[0];
      const formData = new FormData();
      // formData.append("pictureFile", file);
      formData.append('file', file)
      this.$http.post('upload', formData).then(res => {
        console.log(res.data.data.url);
        let quill = this.$refs.myQuillEditor.quill;
        // const formdata = _.extend({}, this.formdata)
        let length = quill.getSelection().index; //光标位置
        // 插入图片  图片地址
        quill.insertEmbed(length, "image", res.data.data.url);
        // 调整光标到最后
        quill.setSelection(length + 1); //光标后移一位
      })
    }
  }
}
</script>

<style lang='less' scoped>
.el-checkbox {
  margin: 0 8px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.btnAdd {
  margin-top: 15px;
}
</style>
